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HOMESERVICE MANUALSCHEVROLET2006CHEVY EXPRESS G2500, VAN CARGO, 6.6 2REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 2274 (WIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT VIEWS &, COMPONENT CONNECTOR END VIEW INDEX)ELECTRICAL CENTER IDENTIFICATION VIEWSJUNCTION BLOCK - RIGHT I/P (WIRE ENTRY)
2006 Chevrolet Chevy Express G2500, Van Cargo, 6.6 2

Junction Block - Right I/P (Wire Entry)

2006 Chevrolet Chevy Express G2500, Van Cargo, 6.6 2SECTION Junction Block - Right I/P (Wire Entry)
WARNING: This page is about a different car, the 2008 GMC Sierra, 2008 GMC Cab & Chassis Sierra, 2008 Chevrolet Silverado, and 2008 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Junction Block - Right I/P (Wire Entry)
GM1666267Courtesy of GENERAL MOTORS CORP.
Junction Block - Right I/P (Wire Entry)

Pin Wire Color Circuit No. Function
2A1 - - Not Used
2A2 0.35 TN 481 Outside Moisture Signal 1 (10 Series)
2A3 0.35 L-GN 482 Outside Moisture Signal 2 (10 Series)
2A4 0.35 WH 2283 Ignition Voltage (10 Series)
0.35 WH 2283 Ignition Voltage (NQH/NQF +10 Series)
2A4-2A6 - - Not Used
2A7 - - Ground Bus
2B1 0.35 RD/WH 3140 Battery Positive Voltage
2B2 0.5 BN 2509 Left Front Park Lamps Supply Voltage
2B3 0.35 YE 43 Accessory Voltage
2B4 0.5 BN/WH 230 Instrument Panel Lamp Dimming Control
2B5 0.5 WH 5990 Emergency Lamp Switch Signal (5Y0/5X7)
2B6 0.5 BK 1050 Ground
2B7 0.35 OG 300 Ignition 3 Voltage (Export w/CF5)
3A1 0.5 D-GN 117 Right Front Speaker Output (-)
3A2 0.5 L-GN 200 Right Front Speaker Output (+)
3A3 0.35 BK 1850 Ground
3A4 0.8 D-BU/WH 1315 Right Front Turn Signal Lamp Supply Voltage (DL3/DPN)
0.8 D-BU/WH 1315 Right Front Turn Signal Lamp Supply Voltage (DL3/DPN)
0.35 L-BU 244 Passenger Door Lock Switch Lock Signal (AU3 -YE9)
3A5 0.35 TN/WH 746 Right Front Door Ajar Switch Signal (-AN3/DL3)
3A6 0.8 GY 295 Door Lock Actuator Lock Control (AU3 -AN3/DL3)
3A7 3 BK 1050 Ground
3B1 0.35 D-GN 5060 Low Speed GMLAN Serial Data (YE9 +AN3/DL3)
3B2 0.8 RD/WH 240 Battery Positive Voltage
3B3 0.8 TN 294 Door Lock Actuator Unlock Control (AU3 -AN3/DL3)
3B4 2 RD/WH 1340 Battery Positive Voltage (A31)
0.35 D-BU 245 Passenger Door Lock Switch Unlock Signal (AU3 -YE9)
3B5 0.35 BN/WH 230 Instrument panel lamps dimming Control (AU3)
3B6 0.35 OG 5922 Passenger Door Open Signal (-AN3/DL3)
3B7 - - Ground Bus
4A1 0.35 GY 598 5-Volt Reference
4A2 0.35 TN 520 Lower Right Air Temperature Sensor Signal (CJ2)
4A3 0.35 TN 518 Lower Left Air Temperature Sensor Signal (CJ2)
4A4 0.35 YE 1791 Low Reference
4A5 0.35 PU 1838 Recirculation Door Position Signal (CJ2)
4A6 0.35 GY/BK 754 Blower Motor Speed Control
4A7 3 BK 1050 Ground
4B1 - - 5-Volt Reference Bus
4B2 0.35 D-BU 1199 Air Temperature Door Control
4B3 0.35 TN 2273 Mode Door Control
4B4 - - Low Reference Bus
4B5 0.35 YE/BK 713 Defrost/Heater Mode Valve Position Sensor Signal
4B6 0.35 L-BU 733 Air Temperature Door Position Signal
4B7 - - Ground Bus
5A 0.35 D-GN 6101 Low Reference
5B 0.35 PK 839 Ignition 1 Voltage
0.35 PK 839 Ignition 1 Voltage
5C 0.35 PK 839 Ignition 1 Voltage
5D 0.35 D-BU 1646 Auxiliary Air Temperature Door Position Signal
5E 0.35 WH/BK 1236 Auxiliary Air Temperature Door Control
5F 0.35 D-GN 1614 Recirculation Door Control
6A 5 RD/BK 542 Battery Positive Voltage
6B 3 BK 1050 Ground
3 BK 1050 Ground
Connector Part Information 
  • OEM: 15489487
  • Service: See Catalog
  • Description: 40-Way F (BK)
Terminal Part Information 
  • Pins: 2A4, 2B4, 3B1, 5A, 5C, 5D, 5E, 5F
  • Terminal/Tray: 15304722/8
  • Core/Insulation Crimp: E/C
  • Release Tool/Test Probe: 15315247/J-35616-5 (PU)
  • Pins: 3A1, 3A4
  • Terminal/Tray: 15304724/8
  • Core/Insulation Crimp: 2/A
  • Release Tool/Test Probe: See Terminal Repair Kit
  • Pins: 2A2, 2A3, 2B3, 2B6, 2B7, 3A7, 4A1, 4A2, 4A3, 4A4, 4A5, 4A6, 4A7, 4B2, 4B3, 4B5, 4B6, 5B
  • Terminal/Tray: 15304724/8
  • Core/Insulation Crimp: See Terminal Repair Kit
  • Release Tool/Test Probe: See Terminal Repair Kit
  • Pins: 2B1, 3B4
  • Terminal/Tray: 15304724/8
  • Core/Insulation Crimp: C/D
  • Release Tool/Test Probe: See Terminal Repair Kit
  • Pins: 6A
  • Terminal/Tray: 12066493/3
  • Core/Insulation Crimp: B/G
  • Release Tool/Test Probe: 12094430/J-35616-43 (RD)
  • Pins:6B
  • Terminal/Tray: 12066493/3
  • Core/Insulation Crimp: F/G
  • Release Tool/Test Probe: 12094430/J-35616-43 (RD)
RENDER: 1.0x

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